2793680 - IDoc failed with error error 'KNA1-CFOPC Fixed value check failed for 'X'

Debmas IDocs are failing with 'KNA1-CFOPC Fixed value check failed for 'X'.

***Where X represents the fixed value of the CFOPC field***

• SAP S/4HANA 

KNA1-CFOPC Fixed value check failed , S/4, S4 , S/4HANA , KNA1 , CFOPC, CVI_API, 002 , CVI_API002,CVI_API 002, IDOC, DEBMAS , DEBMAS06 , failed , status , outbound , inbound , trim, leading zero , trims , trimming , IDOC_INPUT_DEBITOR_MDG , where , CFOP Category field , 51 , Customer , master , leading zeros , IDOC_INPUT_DEBITOR_MDG, category of customer , fixed , KBA , LO-MD-BP , Business Partners , Problem